package com.xl.utils.excel.util;

import cn.hutool.core.util.StrUtil;
import cn.hutool.poi.excel.ExcelUtil;
import com.xl.annotation.Excel;
import com.xl.annotation.Excel.Type;
import com.xl.annotation.Excel.ColumnType;
import com.xl.annotation.Excels;
import com.xl.exception.UtilException;
import com.xl.utils.date.DateUtils;
import com.xl.utils.excel.config.ExcelHandlerAdapter;
import com.xl.utils.file.FileTypeUtils;
import com.xl.utils.file.ImageUtils;
import com.xl.utils.reflect.ReflectUtils;
import com.xl.utils.str.StringUtils;
import com.xl.utils.text.Convert;
import lombok.Data;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.RegExUtils;
import org.apache.commons.lang3.reflect.FieldUtils;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFDataValidation;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Excel相关处理 （进路预告统计使用）
 *
 * @author kfd
 */
@Data
public class PriExcelUtil<T> {
	private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);

	public static final String FORMULA_REGEX_STR = "=|-|\\+|@";

	public static final String[] FORMULA_STR = {"=", "-", "+", "@"};

	/**
	 * Excel sheet最大行数，默认65536
	 */
	public static final int sheetSize = 65536;

	/**
	 * 工作表名称
	 */
	private String sheetName;

	/**
	 * 导出类型（EXPORT:导出数据；IMPORT：导入模板）
	 */
	private Type type;

	/**
	 * 工作薄对象
	 */
	private Workbook wb;

	/**
	 * 工作表对象
	 */
	private XSSFSheet sheet;

	/**
	 * 样式列表
	 */
	private Map<String, CellStyle> styles;

	/**
	 * 导入导出数据列表
	 */
	private List<T> list;

	/**
	 * 注解列表
	 */
	private List<Object[]> fields;

	/**
	 * 当前行号
	 */
	private int rownum;

	/**
	 * 标题
	 */
	private String title;

	/**
	 * 最大高度
	 */
	private short maxHeight;


	/**
	 * 自动设置行高以及宽度
	 *
	 * @return
	 */
	public boolean autoWidthAndHeight = false;

	/**
	 * 合并后最后行数
	 */
	private int subMergedLastRowNum = 0;

	/**
	 * 合并后开始行数
	 */
	private int subMergedFirstRowNum = 1;

	/**
	 * 对象的子列表方法
	 */
	private Method subMethod;

	/**
	 * 对象的子列表属性
	 */
	private List<Field> subFields;

	/**
	 * 要合并的单元格列
	 */
	public List<Integer> mergeCells = new ArrayList<>();


	/**
	 * 统计列表
	 */
	private Map<Integer, Double> statistics = new HashMap<Integer, Double>();

	/**
	 * 数字格式
	 */
	private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");

	/**
	 * 实体对象
	 */
	public Class<T> clazz;

	/**
	 * 需要排除列属性
	 */
	public String[] excludeFields;

	public PriExcelUtil(Class<T> clazz) {
		this.clazz = clazz;
	}

	/**
	 * 隐藏Excel中列属性
	 *
	 * @param fields 列属性名 示例[单个"name"/多个"id","name"]
	 * @throws Exception
	 */
	public void hideColumn(String... fields) {
		this.excludeFields = fields;
	}

	public void init(List<T> list, String sheetName, String title, Type type) {
		if (list == null) {
			list = new ArrayList<T>();
		}
		this.list = list;
		this.sheetName = sheetName;
		this.type = type;
		this.title = title;
		createExcelField();
		createWorkbook();
		createTitle();
		createSubHead();
	}

	/**
	 * 初始化但不新建workbook工作薄对象
	 *
	 * @param list
	 * @param sheetName
	 * @param title
	 * @param type
	 * @param sheetSize
	 */
	public void initNotCreateWorkBook(List<T> list, String sheetName, String title, Type type, int sheetSize) {
		if (list == null) {
			list = new ArrayList<T>();
		}
		this.sheet = (XSSFSheet) wb.createSheet();
		wb.setSheetName(sheetSize, sheetName);
		this.list = list;
		this.sheetName = sheetName;
		this.type = type;
		this.title = title;
		createExcelField();
		createTitle();
		createSubHead();
	}


	/**
	 * 创建excel第一行标题
	 */
	public void createTitle() {
		if (StringUtils.isNotEmpty(title)) {
			subMergedFirstRowNum++;
			subMergedLastRowNum++;
			int titleLastCol = this.fields.size() - 1;
			if (isSubList()) {
				titleLastCol = titleLastCol + subFields.size() - 1;
			}
			Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
			titleRow.setHeightInPoints(30);
			Cell titleCell = titleRow.createCell(0);
			titleCell.setCellStyle(styles.get("title"));
			titleCell.setCellValue(title);
			sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), titleLastCol));
		}
	}

	/**
	 * 创建对象的子列表名称
	 */
	public void createSubHead() {
		if (isSubList()) {
			subMergedFirstRowNum++;
			subMergedLastRowNum++;
			Row subRow = sheet.createRow(rownum);
			int excelNum = 0;
			for (Object[] objects : fields) {
				Excel attr = (Excel) objects[1];
				Cell headCell1 = subRow.createCell(excelNum);
				headCell1.setCellValue(attr.name());
				headCell1.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
				excelNum++;
			}
			int headFirstRow = excelNum - 1;
			int headLastRow = headFirstRow + subFields.size() - 1;
			if (headLastRow > headFirstRow) {
				sheet.addMergedRegion(new CellRangeAddress(rownum, rownum, headFirstRow, headLastRow));
			}
			rownum++;
		}
	}

	/**
	 * 对excel表单默认第一个索引名转换成list
	 *
	 * @param is 输入流
	 * @return 转换后集合
	 */
	public List<T> importExcel(InputStream is) {
		List<T> list = null;
		try {
			list = importExcel(is, 0);
		} catch (Exception e) {
			log.error("导入Excel异常{}", e.getMessage());
			throw new UtilException(e.getMessage());
		} finally {
			IOUtils.closeQuietly(is);
		}
		return list;
	}

	/**
	 * 对excel表单默认第一个索引名转换成list
	 *
	 * @param is       输入流
	 * @param titleNum 标题占用行数
	 * @return 转换后集合
	 */
	public List<T> importExcel(InputStream is, int titleNum) throws Exception {
		return importExcel(StringUtils.EMPTY, is, titleNum);
	}

	/**
	 * 对excel表单指定表格索引名转换成list
	 *
	 * @param sheetName 表格索引名
	 * @param titleNum  标题占用行数
	 * @param is        输入流
	 * @return 转换后集合
	 */
	public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception {
		this.type = Type.IMPORT;
		this.wb = WorkbookFactory.create(is);
		List<T> list = new ArrayList<T>();
		// 如果指定sheet名,则取指定sheet中的内容 否则默认指向第1个sheet
		Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);
		if (sheet == null) {
			throw new IOException("文件sheet不存在");
		}

		// 获取最后一个非空行的行下标，比如总行数为n，则返回的为n-1
		int rows = sheet.getLastRowNum();
		if (rows > 0) {
			// 定义一个map用于存放excel列的序号和field.
			Map<String, Integer> cellMap = new HashMap<String, Integer>();
			// 获取表头
			Row heard = sheet.getRow(titleNum);
			for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) {
				Cell cell = heard.getCell(i);
				if (StringUtils.isNotNull(cell)) {
					String value = this.getCellValue(heard, i).toString();
					cellMap.put(value, i);
				} else {
					cellMap.put(null, i);
				}
			}
			// 有数据时才处理 得到类的所有field.
			List<Object[]> fields = this.getFields();
			Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>();
			for (Object[] objects : fields) {
				Excel attr = (Excel) objects[1];
				Integer column = cellMap.get(attr.name());
				if (column != null) {
					fieldsMap.put(column, objects);
				}
			}
			for (int i = titleNum + 1; i <= rows; i++) {
				// 从第2行开始取数据,默认第一行是表头.
				Row row = sheet.getRow(i);
				// 判断当前行是否是空行
				if (isRowEmpty(row)) {
					continue;
				}
				T entity = null;
				for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet()) {
					Object val = this.getCellValue(row, entry.getKey());

					// 如果不存在实例则新建.
					entity = (entity == null ? clazz.newInstance() : entity);
					// 从map中得到对应列的field.
					Field field = (Field) entry.getValue()[0];
					Excel attr = (Excel) entry.getValue()[1];
					// 取得类型,并根据对象类型设置值.
					Class<?> fieldType = field.getType();
					if (String.class == fieldType) {
						String s = Convert.toStr(val);
						if (StringUtils.endsWith(s, ".0")) {
							val = StringUtils.substringBefore(s, ".0");
						} else {
							String dateFormat = field.getAnnotation(Excel.class).dateFormat();
							if (StringUtils.isNotEmpty(dateFormat)) {
								val = parseDateToStr(dateFormat, val);
							} else {
								val = Convert.toStr(val);
							}
						}
					} else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val))) {
						val = Convert.toInt(val);
					} else if ((Long.TYPE == fieldType || Long.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val))) {
						val = Convert.toLong(val);
					} else if (Double.TYPE == fieldType || Double.class == fieldType) {
						val = Convert.toDouble(val);
					} else if (Float.TYPE == fieldType || Float.class == fieldType) {
						val = Convert.toFloat(val);
					} else if (BigDecimal.class == fieldType) {
						val = Convert.toBigDecimal(val);
					} else if (Date.class == fieldType) {
						if (val instanceof String) {
							val = DateUtils.parseDate(val);
						} else if (val instanceof Double) {
							val = DateUtil.getJavaDate((Double) val);
						}
					} else if (Boolean.TYPE == fieldType || Boolean.class == fieldType) {
						val = Convert.toBool(val, false);
					}
					if (StringUtils.isNotNull(fieldType)) {
						String propertyName = field.getName();
						if (StringUtils.isNotEmpty(attr.targetAttr())) {
							propertyName = field.getName() + "." + attr.targetAttr();
						}
						if (StringUtils.isNotEmpty(attr.readConverterExp())) {
							val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());
						} else if (!attr.handler().equals(ExcelHandlerAdapter.class)) {
							val = dataFormatHandlerAdapter(val, attr, null);
						}
						ReflectUtils.invokeSetter(entity, propertyName, val);
					}
				}
				list.add(entity);
			}
		}
		return list;
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @param response  返回数据
	 * @param list      导出数据集合
	 * @param sheetName 工作表的名称
	 * @return 结果
	 */
	public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) {
		exportExcel(response, list, sheetName, StringUtils.EMPTY);
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @param response  返回数据
	 * @param list      导出数据集合
	 * @param sheetName 工作表的名称
	 * @param title     标题
	 * @return 结果
	 */
	public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title) {
		response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
		response.setCharacterEncoding("utf-8");
		this.init(list, sheetName, title, Type.EXPORT);
		exportExcel(response);
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @param response  返回数据
	 * @param map       导出数据集合 key是sheetname，value是sheet内的数据
	 * @param sheetName 工作表的名称
	 * @param title     标题
	 * @return 结果
	 */
	public void exportExcel(HttpServletResponse response, Map<String, List<T>> map, String sheetName, String title) {
		response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
		response.setCharacterEncoding("utf-8");
		exportExcel(response, map, title);
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @param sheetName 工作表的名称
	 * @return 结果
	 */
	public void importTemplateExcel(HttpServletResponse response, String sheetName) {
		importTemplateExcel(response, sheetName, StringUtils.EMPTY);
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @param sheetName 工作表的名称
	 * @param title     标题
	 * @return 结果
	 */
	public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) {
		response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
		response.setCharacterEncoding("utf-8");
		this.init(null, sheetName, title, Type.IMPORT);
		exportExcel(response);
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单
	 *
	 * @return 结果
	 */
	public void exportExcel(HttpServletResponse response) {
		try {
			writeSheet();
			wb.write(response.getOutputStream());
		} catch (Exception e) {
			log.error("导出Excel异常{}", e.getMessage());
		} finally {
			IOUtils.closeQuietly(wb);
		}
	}

	/**
	 * 对list数据源将其里面的数据导入到excel表单（多个sheet）
	 *
	 * @return 结果
	 */
	public void exportExcel(HttpServletResponse response, Map<String, List<T>> map, String title) {
		try {
			int flag = 0;
			for (Map.Entry<String, List<T>> entry : map.entrySet()) {

				//init会新建workbook
				if (flag == 0) {
					this.init(entry.getValue(), entry.getKey(), title, Type.EXPORT);
				} else {
					this.initNotCreateWorkBook(entry.getValue(), entry.getKey(), title, Type.EXPORT, flag);
				}
				flag++;
				writeSheet();
			}
			wb.write(response.getOutputStream());

		} catch (Exception e) {
			log.error("导出Excel异常{}", e.getMessage());
		} finally {
			IOUtils.closeQuietly(wb);
		}
	}

	/**
	 * 创建写入数据到Sheet
	 */
	public void writeSheet() {
		// 取出一共有多少个sheet.
		int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));
		for (int index = 0; index < sheetNo; index++) {
			createSheet(sheetNo, index);

			// 产生一行
			Row row = sheet.createRow(rownum);
			int column = 0;
			// 写入各个字段的列头名称
			for (Object[] os : fields) {
				Field field = (Field) os[0];
				Excel excel = (Excel) os[1];
				if (Collection.class.isAssignableFrom(field.getType())) {
					for (Field subField : subFields) {
						Excel subExcel = subField.getAnnotation(Excel.class);
						this.createHeadCell(subExcel, row, column++);
					}
				} else {
					this.createHeadCell(excel, row, column++);
				}
			}
			if (Type.EXPORT.equals(type)) {
				fillExcelData(index, row);
				addStatisticsRow();
			}
		}

	}

	/**
	 * 填充excel数据
	 *
	 * @param index 序号
	 * @param row   单元格行
	 */
	@SuppressWarnings("unchecked")
	public void fillExcelData(int index, Row row) {
		int startNo = index * sheetSize;
		int endNo = Math.min(startNo + sheetSize, list.size());
		int rowNo = (1 + rownum) - startNo;
		for (int i = startNo; i < endNo; i++) {
			rowNo = isSubList() ? (i > 1 ? rowNo + 1 : rowNo + i) : i + 1 + rownum - startNo;
			row = sheet.createRow(rowNo);
			// 得到导出对象.
			T vo = (T) list.get(i);
			Collection<?> subList = null;
			if (isSubList()) {
				if (isSubListValue(vo)) {
					subList = getListCellValue(vo);
					subMergedLastRowNum = subMergedLastRowNum + subList.size();
				} else {
					subMergedFirstRowNum++;
					subMergedLastRowNum++;
				}
			}
			int column = 0;
			for (Object[] os : fields) {
				Field field = (Field) os[0];
				Excel excel = (Excel) os[1];
				if (Collection.class.isAssignableFrom(field.getType()) && StringUtils.isNotNull(subList)) {
					boolean subFirst = false;
					for (Object obj : subList) {
						if (subFirst) {
							rowNo++;
							row = sheet.createRow(rowNo);
						}
						List<Field> subFields = FieldUtils.getFieldsListWithAnnotation(obj.getClass(), Excel.class);
						int subIndex = 0;
						for (Field subField : subFields) {
							if (subField.isAnnotationPresent(Excel.class)) {
								subField.setAccessible(true);
								Excel attr = subField.getAnnotation(Excel.class);
								this.addCell(attr, row, (T) obj, subField, column + subIndex);
							}
							subIndex++;
						}
						subFirst = true;
					}
					this.subMergedFirstRowNum = this.subMergedFirstRowNum + subList.size();
				} else {
					this.addCell(excel, row, vo, field, column++);
				}
			}
		}

		//以下为新加值
		//合并单元格(需要传入要合并的列序号)
		if (mergeCells.size() > 0) {
			for (int mergeCell : mergeCells) {
				if (StrUtil.isBlank(title)) {
					mergeCells(sheet, mergeCell - 1, 1, sheet.getLastRowNum());
				} else {
					mergeCells(sheet, mergeCell - 1, 2, sheet.getLastRowNum());
				}
			}
		}
	}

	/**
	 * @param sheet
	 * @param cellLine 合并的列号
	 * @param startRow 开始行
	 * @param endRow   尾行
	 **/
	private void mergeCells(Sheet sheet, int cellLine, int startRow, int endRow) {
		// 获取开始行的数据,以便后面进行比较
		Object cellValue = getCellValue(sheet.getRow(startRow), cellLine);
		String s_will = Objects.isNull(cellValue) ? "" : cellValue.toString();
		//合并行数
		int count = 0;
		//数据比较，从开始行的下一行比较
		for (int i = startRow + 1; i <= endRow; i++) {
			//取出下一行的数据
			String s_current = getCellValue(sheet.getRow(i), cellLine).toString();
			//与相对的开始行的数据进行比较
			if (s_will.equals(s_current) && !s_will.equals("")) {
				//合并行数加一
				count++;
			} else {
				//如果合并行数大于等于1就合并，现将需要合并的行数进行合并
				if (count >= 1) {
					//合并从开始行到合并的行数
					sheet.addMergedRegion(new CellRangeAddress(startRow, startRow + count, cellLine, cellLine));
				}
				//初始化数据，进行下一个单元格合并
				startRow = i;
				s_will = s_current;
				count = 0;
			}
			//最后个单元格合并
			if (i == endRow && count > 0) {
				sheet.addMergedRegion(new CellRangeAddress(startRow, startRow + count, cellLine, cellLine));
			}
		}
	}


	/**
	 * 创建表格样式
	 *
	 * @param wb 工作薄对象
	 * @return 样式列表
	 */
	private Map<String, CellStyle> createStyles(Workbook wb) {
		// 写入各条记录,每条记录对应excel表中的一行
		Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
		CellStyle style = wb.createCellStyle();
		style.setWrapText(true);
		style.setAlignment(HorizontalAlignment.LEFT);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		Font titleFont = wb.createFont();
		titleFont.setFontName("Arial");
		titleFont.setFontHeightInPoints((short) 16);
		titleFont.setBold(true);
		style.setFont(titleFont);
		styles.put("title", style);

		style = wb.createCellStyle();
		style.setWrapText(true);
		style.setAlignment(HorizontalAlignment.CENTER);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		style.setBorderRight(BorderStyle.THIN);
		style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
		style.setBorderLeft(BorderStyle.THIN);
		style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
		style.setBorderTop(BorderStyle.THIN);
		style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
		style.setBorderBottom(BorderStyle.THIN);
		style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
		Font dataFont = wb.createFont();
		dataFont.setFontName("Arial");
		dataFont.setFontHeightInPoints((short) 10);
		style.setFont(dataFont);
		styles.put("data", style);

		style = wb.createCellStyle();
		style.setWrapText(true);
		style.setAlignment(HorizontalAlignment.CENTER);
		style.setVerticalAlignment(VerticalAlignment.CENTER);
		Font totalFont = wb.createFont();
		totalFont.setFontName("Arial");
		totalFont.setFontHeightInPoints((short) 10);
		style.setFont(totalFont);
		styles.put("total", style);

		styles.putAll(annotationHeaderStyles(wb, styles));

		styles.putAll(annotationDataStyles(wb));

		return styles;
	}

	/**
	 * 根据Excel注解创建表格头样式
	 *
	 * @param wb 工作薄对象
	 * @return 自定义样式列表
	 */
	private Map<String, CellStyle> annotationHeaderStyles(Workbook wb, Map<String, CellStyle> styles) {
		Map<String, CellStyle> headerStyles = new HashMap<String, CellStyle>();
		for (Object[] os : fields) {
			Excel excel = (Excel) os[1];
			String key = StringUtils.format("header_{}_{}", excel.headerColor(), excel.headerBackgroundColor());
			if (!headerStyles.containsKey(key)) {
				CellStyle style = wb.createCellStyle();
				style.setWrapText(true);
				style.cloneStyleFrom(styles.get("data"));
				style.setAlignment(HorizontalAlignment.CENTER);
				style.setVerticalAlignment(VerticalAlignment.CENTER);
				style.setFillForegroundColor(excel.headerBackgroundColor().index);
				style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
				Font headerFont = wb.createFont();
				headerFont.setFontName("Arial");
				headerFont.setFontHeightInPoints((short) 10);
				headerFont.setBold(true);
				headerFont.setColor(excel.headerColor().index);
				style.setFont(headerFont);
				headerStyles.put(key, style);
			}
		}
		return headerStyles;
	}

	/**
	 * 根据Excel注解创建表格列样式
	 *
	 * @param wb 工作薄对象
	 * @return 自定义样式列表
	 */
	private Map<String, CellStyle> annotationDataStyles(Workbook wb) {
		Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
		for (Object[] os : fields) {
			Excel excel = (Excel) os[1];
			String key = StringUtils.format("data_{}_{}_{}", excel.align(), excel.color(), excel.backgroundColor());
			if (!styles.containsKey(key)) {
				CellStyle style = wb.createCellStyle();
				style.setAlignment(excel.align());
				style.setWrapText(true);
				style.setVerticalAlignment(VerticalAlignment.CENTER);
				style.setBorderRight(BorderStyle.THIN);
				style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
				style.setBorderLeft(BorderStyle.THIN);
				style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
				style.setBorderTop(BorderStyle.THIN);
				style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
				style.setBorderBottom(BorderStyle.THIN);
				style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
				style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
				style.setFillForegroundColor(excel.backgroundColor().getIndex());
				Font dataFont = wb.createFont();
				dataFont.setFontName("Arial");
				dataFont.setFontHeightInPoints((short) 10);
				dataFont.setColor(excel.color().index);
				style.setFont(dataFont);
				styles.put(key, style);
			}
		}
		return styles;
	}

	/**
	 * 创建单元格
	 */
	public Cell createHeadCell(Excel attr, Row row, int column) {
		// 创建列
		Cell cell = row.createCell(column);
		// 写入列信息
		cell.setCellValue(attr.name());
		setDataValidation(attr, row, column);
		cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
		if (isSubList()) {
			// 填充默认样式，防止合并单元格样式失效
			sheet.setDefaultColumnStyle(column, styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
			if (attr.needMerge()) {
				sheet.addMergedRegion(new CellRangeAddress(rownum - 1, rownum, column, column));
			}
		}
		return cell;
	}

	/**
	 * 设置单元格信息
	 *
	 * @param value 单元格值
	 * @param attr  注解相关
	 * @param cell  单元格信息
	 */
	public void setCellVo(Object value, Excel attr, Cell cell) {
		if (ColumnType.STRING == attr.cellType()) {
			String cellValue = Convert.toStr(value);
			// 对于任何以表达式触发字符 =-+@开头的单元格，直接使用tab字符作为前缀，防止CSV注入。
			if (StringUtils.startsWithAny(cellValue, FORMULA_STR)) {
				cellValue = RegExUtils.replaceFirst(cellValue, FORMULA_REGEX_STR, "\t$0");
			}
			if (value instanceof Collection && StringUtils.equals("[]", cellValue)) {
				cellValue = StringUtils.EMPTY;
			}
			cell.setCellValue(StringUtils.isNull(cellValue) ? attr.defaultValue() : cellValue + attr.suffix());
		} else if (ColumnType.NUMERIC == attr.cellType()) {
			if (StringUtils.isNotNull(value)) {
				cell.setCellValue(StringUtils.contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));
			}
		} else if (ColumnType.IMAGE == attr.cellType()) {
			ClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1), cell.getRow().getRowNum() + 1);
			String imagePath = Convert.toStr(value);
			if (StringUtils.isNotEmpty(imagePath)) {
				byte[] data = ImageUtils.getImage(imagePath);
				getDrawingPatriarch(cell.getSheet()).createPicture(anchor,
						cell.getSheet().getWorkbook().addPicture(data, getImageType(data)));
			}
		}
	}

	/**
	 * 获取画布
	 */
	public static Drawing<?> getDrawingPatriarch(Sheet sheet) {
		if (sheet.getDrawingPatriarch() == null) {
			sheet.createDrawingPatriarch();
		}
		return sheet.getDrawingPatriarch();
	}

	/**
	 * 获取图片类型,设置图片插入类型
	 */
	public int getImageType(byte[] value) {
		String type = FileTypeUtils.getFileExtendName(value);
		if ("JPG".equalsIgnoreCase(type)) {
			return Workbook.PICTURE_TYPE_JPEG;
		} else if ("PNG".equalsIgnoreCase(type)) {
			return Workbook.PICTURE_TYPE_PNG;
		}
		return Workbook.PICTURE_TYPE_JPEG;
	}

	/**
	 * 创建表格样式
	 */
	public void setDataValidation(Excel attr, Row row, int column) {
		if (attr.name().indexOf("注：") >= 0) {
			sheet.setColumnWidth(column, 6000);
		} else {
			// 设置列宽
			sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
		}
		if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0) {
			if (attr.combo().length > 15 || StringUtils.join(attr.combo()).length() > 255) {
				// 如果下拉数大于15或字符串长度大于255，则使用一个新sheet存储，避免生成的模板下拉值获取不到
				setXSSFValidationWithHidden(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
			} else {
				// 提示信息或只能选择不能输入的列内容.
				setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
			}
		}
	}

	/**
	 * 添加单元格
	 */
	public Cell addCell(Excel attr, Row row, T vo, Field field, int column) {
		Cell cell = null;
		try {
			row.setHeight(maxHeight);
			// 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
			if (attr.isExport()) {
				// 创建cell
				cell = row.createCell(column);
				if (isSubListValue(vo) && getListCellValue(vo).size() > 1 && attr.needMerge()) {
					CellRangeAddress cellAddress = new CellRangeAddress(subMergedFirstRowNum, subMergedLastRowNum, column, column);
					sheet.addMergedRegion(cellAddress);
				}
				cell.setCellStyle(styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));

				// 用于读取对象中的属性
				Object value = getTargetValue(vo, field, attr);
				String dateFormat = attr.dateFormat();
				String readConverterExp = attr.readConverterExp();
				String separator = attr.separator();
				if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value)) {
					cell.setCellValue(parseDateToStr(dateFormat, value));
				} else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value)) {
					cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
				} else if (value instanceof BigDecimal && -1 != attr.scale()) {
					cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).doubleValue());
				} else if (!attr.handler().equals(ExcelHandlerAdapter.class)) {
					cell.setCellValue(dataFormatHandlerAdapter(value, attr, cell));
				} else {
					// 设置列类型
					setCellVo(value, attr, cell);
				}

				addStatisticsData(column, Convert.toStr(value), attr);
			}
		} catch (Exception e) {
			log.error("导出Excel失败{}", e);
		}
		return cell;
	}

	/**
	 * 设置 POI XSSFSheet 单元格提示或选择框
	 *
	 * @param sheet         表单
	 * @param textlist      下拉框显示的内容
	 * @param promptContent 提示内容
	 * @param firstRow      开始行
	 * @param endRow        结束行
	 * @param firstCol      开始列
	 * @param endCol        结束列
	 */
	public void setPromptOrValidation(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow,
									  int firstCol, int endCol) {
		DataValidationHelper helper = sheet.getDataValidationHelper();
		DataValidationConstraint constraint = textlist.length > 0 ? helper.createExplicitListConstraint(textlist) : helper.createCustomConstraint("DD1");
		CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
		DataValidation dataValidation = helper.createValidation(constraint, regions);
		if (StringUtils.isNotEmpty(promptContent)) {
			// 如果设置了提示信息则鼠标放上去提示
			dataValidation.createPromptBox("", promptContent);
			dataValidation.setShowPromptBox(true);
		}
		// 处理Excel兼容性问题
		if (dataValidation instanceof XSSFDataValidation) {
			dataValidation.setSuppressDropDownArrow(true);
			dataValidation.setShowErrorBox(true);
		} else {
			dataValidation.setSuppressDropDownArrow(false);
		}
		sheet.addValidationData(dataValidation);
	}

	/**
	 * 设置某些列的值只能输入预制的数据,显示下拉框（兼容超出一定数量的下拉框）.
	 *
	 * @param sheet         要设置的sheet.
	 * @param textlist      下拉框显示的内容
	 * @param promptContent 提示内容
	 * @param firstRow      开始行
	 * @param endRow        结束行
	 * @param firstCol      开始列
	 * @param endCol        结束列
	 */
	public void setXSSFValidationWithHidden(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow, int firstCol, int endCol) {
		String hideSheetName = "combo_" + firstCol + "_" + endCol;
		Sheet hideSheet = wb.createSheet(hideSheetName); // 用于存储 下拉菜单数据
		for (int i = 0; i < textlist.length; i++) {
			hideSheet.createRow(i).createCell(0).setCellValue(textlist[i]);
		}
		// 创建名称，可被其他单元格引用
		Name name = wb.createName();
		name.setNameName(hideSheetName + "_data");
		name.setRefersToFormula(hideSheetName + "!$A$1:$A$" + textlist.length);
		DataValidationHelper helper = sheet.getDataValidationHelper();
		// 加载下拉列表内容
		DataValidationConstraint constraint = helper.createFormulaListConstraint(hideSheetName + "_data");
		// 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
		CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
		// 数据有效性对象
		DataValidation dataValidation = helper.createValidation(constraint, regions);
		if (StringUtils.isNotEmpty(promptContent)) {
			// 如果设置了提示信息则鼠标放上去提示
			dataValidation.createPromptBox("", promptContent);
			dataValidation.setShowPromptBox(true);
		}
		// 处理Excel兼容性问题
		if (dataValidation instanceof XSSFDataValidation) {
			dataValidation.setSuppressDropDownArrow(true);
			dataValidation.setShowErrorBox(true);
		} else {
			dataValidation.setSuppressDropDownArrow(false);
		}

		sheet.addValidationData(dataValidation);
		// 设置hiddenSheet隐藏
		wb.setSheetHidden(wb.getSheetIndex(hideSheet), true);
	}

	/**
	 * 解析导出值 0=男,1=女,2=未知
	 *
	 * @param propertyValue 参数值
	 * @param converterExp  翻译注解
	 * @param separator     分隔符
	 * @return 解析后值
	 */
	public static String convertByExp(String propertyValue, String converterExp, String separator) {
		StringBuilder propertyString = new StringBuilder();
		String[] convertSource = converterExp.split(",");
		for (String item : convertSource) {
			String[] itemArray = item.split("=");
			if (StringUtils.containsAny(propertyValue, separator)) {
				for (String value : propertyValue.split(separator)) {
					if (itemArray[0].equals(value)) {
						propertyString.append(itemArray[1] + separator);
						break;
					}
				}
			} else {
				if (itemArray[0].equals(propertyValue)) {
					return itemArray[1];
				}
			}
		}
		return StringUtils.stripEnd(propertyString.toString(), separator);
	}

	/**
	 * 反向解析值 男=0,女=1,未知=2
	 *
	 * @param propertyValue 参数值
	 * @param converterExp  翻译注解
	 * @param separator     分隔符
	 * @return 解析后值
	 */
	public static String reverseByExp(String propertyValue, String converterExp, String separator) {
		StringBuilder propertyString = new StringBuilder();
		String[] convertSource = converterExp.split(",");
		for (String item : convertSource) {
			String[] itemArray = item.split("=");
			if (StringUtils.containsAny(propertyValue, separator)) {
				for (String value : propertyValue.split(separator)) {
					if (itemArray[1].equals(value)) {
						propertyString.append(itemArray[0] + separator);
						break;
					}
				}
			} else {
				if (itemArray[1].equals(propertyValue)) {
					return itemArray[0];
				}
			}
		}
		return StringUtils.stripEnd(propertyString.toString(), separator);
	}

	/**
	 * 数据处理器
	 *
	 * @param value 数据值
	 * @param excel 数据注解
	 * @return
	 */
	public String dataFormatHandlerAdapter(Object value, Excel excel, Cell cell) {
		try {
			Object instance = excel.handler().newInstance();
			Method formatMethod = excel.handler().getMethod("format", new Class[]{Object.class, String[].class, Cell.class, Workbook.class});
			value = formatMethod.invoke(instance, value, excel.args(), cell, this.wb);
		} catch (Exception e) {
			log.error("不能格式化数据 " + excel.handler(), e.getMessage());
		}
		return Convert.toStr(value);
	}

	/**
	 * 合计统计信息
	 */
	private void addStatisticsData(Integer index, String text, Excel entity) {
		if (entity != null && entity.isStatistics()) {
			Double temp = 0D;
			if (!statistics.containsKey(index)) {
				statistics.put(index, temp);
			}
			try {
				temp = Double.valueOf(text);
			} catch (NumberFormatException e) {
			}
			statistics.put(index, statistics.get(index) + temp);
		}
	}

	/**
	 * 创建统计行
	 */
	public void addStatisticsRow() {
		if (statistics.size() > 0) {
			Row row = sheet.createRow(sheet.getLastRowNum() + 1);
			Set<Integer> keys = statistics.keySet();
			Cell cell = row.createCell(0);
			cell.setCellStyle(styles.get("total"));
			cell.setCellValue("合计");

			for (Integer key : keys) {
				cell = row.createCell(key);
				cell.setCellStyle(styles.get("total"));
				cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));
			}
			statistics.clear();
		}
	}

	/**
	 * 获取bean中的属性值
	 *
	 * @param vo    实体对象
	 * @param field 字段
	 * @param excel 注解
	 * @return 最终的属性值
	 * @throws Exception
	 */
	private Object getTargetValue(T vo, Field field, Excel excel) throws Exception {
		Object o = field.get(vo);
		if (StringUtils.isNotEmpty(excel.targetAttr())) {
			String target = excel.targetAttr();
			if (target.contains(".")) {
				String[] targets = target.split("[.]");
				for (String name : targets) {
					o = getValue(o, name);
				}
			} else {
				o = getValue(o, target);
			}
		}
		return o;
	}

	/**
	 * 以类的属性的get方法方法形式获取值
	 *
	 * @param o
	 * @param name
	 * @return value
	 * @throws Exception
	 */
	private Object getValue(Object o, String name) throws Exception {
		if (StringUtils.isNotNull(o) && StringUtils.isNotEmpty(name)) {
			Class<?> clazz = o.getClass();
			Field field = clazz.getDeclaredField(name);
			field.setAccessible(true);
			o = field.get(o);
		}
		return o;
	}


	/**
	 * 得到所有定义字段
	 */
	private void createExcelField() {
		this.fields = getFields();
		//筛选出需要合并的单元格的位置
		if (this.fields.size() > 0) {
			for (Object[] os : fields) {
				Excel excel = (Excel) os[1];
				if (excel.isMerge()) {
					this.mergeCells.add(excel.sort());
				}
			}
		}

		this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
		this.maxHeight = getRowHeight();
	}


	/**
	 * 获取字段注解信息
	 */
	public List<Object[]> getFields() {
		List<Object[]> fields = new ArrayList<Object[]>();
		List<Field> tempFields = new ArrayList<>();
		tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));
		tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
		for (Field field : tempFields) {
			if (!ArrayUtils.contains(this.excludeFields, field.getName())) {
				// 单注解
				if (field.isAnnotationPresent(Excel.class)) {
					Excel attr = field.getAnnotation(Excel.class);
					if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) {
						field.setAccessible(true);
						fields.add(new Object[]{field, attr});
					}
					if (Collection.class.isAssignableFrom(field.getType())) {
						subMethod = getSubMethod(field.getName(), clazz);
						ParameterizedType pt = (ParameterizedType) field.getGenericType();
						Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0];
						this.subFields = FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class);
					}
				}

				// 多注解
				if (field.isAnnotationPresent(Excels.class)) {
					Excels attrs = field.getAnnotation(Excels.class);
					Excel[] excels = attrs.value();
					for (Excel attr : excels) {
						if (!ArrayUtils.contains(this.excludeFields, field.getName() + "." + attr.targetAttr())
								&& (attr != null && (attr.type() == Type.ALL || attr.type() == type))) {
							field.setAccessible(true);
							fields.add(new Object[]{field, attr});
						}
					}
				}
			}
		}
		return fields;
	}

	/**
	 * 根据注解获取最大行高
	 */
	public short getRowHeight() {
		double maxHeight = 0;
		for (Object[] os : this.fields) {
			Excel excel = (Excel) os[1];
			maxHeight = Math.max(maxHeight, excel.height());
		}
		return (short) (maxHeight * 20);
	}

	/**
	 * 创建一个工作簿
	 */
	public void createWorkbook() {
		this.wb = new XSSFWorkbook();
		this.sheet = (XSSFSheet) wb.createSheet();
		wb.setSheetName(0, sheetName);
		this.styles = createStyles(wb);
	}

	/**
	 * 创建工作表
	 *
	 * @param sheetNo sheet数量
	 * @param index   序号
	 */
	public void createSheet(int sheetNo, int index) {
		// 设置工作表的名称.
		if (sheetNo > 1 && index > 0) {
			this.sheet = (XSSFSheet) wb.createSheet();
			this.createTitle();
			wb.setSheetName(index, sheetName + index);
		}
	}

	/**
	 * 获取单元格值
	 *
	 * @param row    获取的行
	 * @param column 获取单元格列号
	 * @return 单元格值
	 */
	public Object getCellValue(Row row, int column) {
		if (row == null) {
			return row;
		}
		Object val = "";
		try {
			Cell cell = row.getCell(column);
			if (StringUtils.isNotNull(cell)) {
				if (cell.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA) {
					val = cell.getNumericCellValue();
					if (DateUtil.isCellDateFormatted(cell)) {
						val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式转换
					} else {
						if ((Double) val % 1 != 0) {
							val = new BigDecimal(val.toString());
						} else {
							val = new DecimalFormat("0").format(val);
						}
					}
				} else if (cell.getCellType() == CellType.STRING) {
					val = cell.getStringCellValue();
				} else if (cell.getCellType() == CellType.BOOLEAN) {
					val = cell.getBooleanCellValue();
				} else if (cell.getCellType() == CellType.ERROR) {
					val = cell.getErrorCellValue();
				}

			}
		} catch (Exception e) {
			return val;
		}
		return val;
	}

	/**
	 * 判断是否是空行
	 *
	 * @param row 判断的行
	 * @return
	 */
	private boolean isRowEmpty(Row row) {
		if (row == null) {
			return true;
		}
		for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++) {
			Cell cell = row.getCell(i);
			if (cell != null && cell.getCellType() != CellType.BLANK) {
				return false;
			}
		}
		return true;
	}

	/**
	 * 格式化不同类型的日期对象
	 *
	 * @param dateFormat 日期格式
	 * @param val        被格式化的日期对象
	 * @return 格式化后的日期字符
	 */
	public String parseDateToStr(String dateFormat, Object val) {
		if (val == null) {
			return "";
		}
		String str;
		if (val instanceof Date) {
			str = DateUtils.parseDateToStr(dateFormat, (Date) val);
		} else if (val instanceof LocalDateTime) {
			str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val));
		} else if (val instanceof LocalDate) {
			str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val));
		} else {
			str = val.toString();
		}
		return str;
	}

	/**
	 * 是否有对象的子列表
	 */
	public boolean isSubList() {
		return StringUtils.isNotNull(subFields) && subFields.size() > 0;
	}

	/**
	 * 是否有对象的子列表，集合不为空
	 */
	public boolean isSubListValue(T vo) {
		return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0;
	}

	/**
	 * 获取集合的值
	 */
	public Collection<?> getListCellValue(Object obj) {
		Object value;
		try {
			value = subMethod.invoke(obj, new Object[]{});
		} catch (Exception e) {
			return new ArrayList<Object>();
		}
		return (Collection<?>) value;
	}

	/**
	 * 获取对象的子列表方法
	 *
	 * @param name      名称
	 * @param pojoClass 类对象
	 * @return 子列表方法
	 */
	public Method getSubMethod(String name, Class<?> pojoClass) {
		StringBuffer getMethodName = new StringBuffer("get");
		getMethodName.append(name.substring(0, 1).toUpperCase());
		getMethodName.append(name.substring(1));
		Method method = null;
		try {
			method = pojoClass.getMethod(getMethodName.toString(), new Class[]{});
		} catch (Exception e) {
			log.error("获取对象异常{}", e.getMessage());
		}
		return method;
	}
}
